November 2020 - Page 8 of 66

Common Problems 115077

systemd-resolved Not Used and DNS Queries Intermittently Fail

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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FreeBSD 12 — rubygem-websocket-extensions — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-websocket-extensions — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: websocket-extensions — ReDoS vulnerability Related CVEs: CVE-2020-7663 Upstream summary: Changelog: Remove a ReDoS vulnerability in the header parser (CVE-2020-7663) Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Set Up a Static IP Address on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up a Static IP Address on SLES 15

Introduction This tutorial covers How to Set Up a Static IP Address on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to […]

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FreeBSD 12 — rubygem-activesupport — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-activesupport — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Rails — multiple vulnerabilities Related CVEs: CVE-2007-3227 CVE-2012-3463 CVE-2012-3464 CVE-2012-3465 CVE-2013-0155 CVE-2013-0156 CVE-2013-1854 CVE-2013-1856  +12 more Upstream summary: Ruby on Rails blog: Hi everyone! Rails 5.2.4.3 and 6.0.3.1 have been […]

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Plotting ROC curve in R Programming — step-by-step DevOps tutorial on Progressive Robot

Plotting ROC curve in R Programming

URL: https://www.progressiverobot.com/plot-roc-curve-r-programming/ Hello, folks! In this article, we will be having a look at an important error metric of Machine Learning — Plotting ROC curve in R programming, in detail. So, let us begin!! The necessity of the ROC curve Error metrics enable us to evaluate and justify the functioning of the model on a […]

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FreeBSD 12 — libzmq — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libzmq — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libzmq4 — Denial of Service Related CVEs: CVE-2014-9721 CVE-2019-13132 CVE-2019-6250 CVE-2020-15166 Upstream summary: Google's oss-fuzz project reports: Denial-of-Service on CURVE/ZAP-protected servers by unauthenticated clients. If a raw TCP socket is […]

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How to Set Up Magento on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Magento on Oracle Linux 8

Introduction This tutorial demonstrates how to Set Up Magento on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default […]

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